package org.eclipse.jface.text;

/**
 * A document rewrite session type.
 * <p>
 * Allowed values are:
 * <ul>
 * <li>{@link DocumentRewriteSessionType#UNRESTRICTED}</li>
 * <li>{@link DocumentRewriteSessionType#SEQUENTIAL}</li>
 * <li>{@link DocumentRewriteSessionType#STRICTLY_SEQUENTIAL}</li>
 * </ul>
 * </p>
 * 
 * @see org.eclipse.jface.text.IDocument
 * @see org.eclipse.jface.text.IDocumentExtension4
 * @see org.eclipse.jface.text.IDocumentRewriteSessionListener
 * @since 3.1
 */
public class DocumentRewriteSessionType {

	/**
	 * A unrestricted rewrite session is a sequence of unrestricted replace
	 * operations.
	 */
	public final static DocumentRewriteSessionType UNRESTRICTED = new DocumentRewriteSessionType();

	/**
	 * A sequential rewrite session is a sequence of non-overlapping replace
	 * operations starting at an arbitrary document offset.
	 */
	public final static DocumentRewriteSessionType SEQUENTIAL = new DocumentRewriteSessionType();

	/**
	 * A strictly sequential rewrite session is a sequence of non-overlapping
	 * replace operations from the start of the document to its end.
	 */
	public final static DocumentRewriteSessionType STRICTLY_SEQUENTIAL = new DocumentRewriteSessionType();

	/**
	 * Prohibit external object creation.
	 */
	private DocumentRewriteSessionType() {
	}
}